A rigid container holds 0.30g of hydrogen gas. Part A) How much heat is needed to change the temperature of the gas from 50 K to 100 K?
Express your answer to two significant figures and include the appropriate units.
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Part B) How much heat is needed to change the temperature of the gas from 250 K to 300 K?
Express your answer to two significant figures and include the appropriate units.
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Part C) How much heat is needed to change the temperature of the gas from 2250 K to 2300 K?
Express your answer to two significant figures and include the appropriate units.
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Part A:     to two significant figures

Part B:     to two significant figures

Part C:     to two significant figures

Explanation:

Given that :

mass of the hydrogen = 0.30 g

the molar mass of hydrogen gas molecule = 2 g/mol

we all know that:

number of moles = mass/molar mass

number of moles = 0.30 g /2 g/mol

number of moles = 0.15 mol

For low temperature between the range of 50 K to 100 K, the specific heat at constant volume for a diatomic gas molecule =

For Part A:

to two significant figures

Part B. For hot temperature,

to two significant figures

Part C. For an extremely hot temperature,

to two significant figures